Substrate-Directed Diastereoselective Hydroformylations, 1. Substrate-Directed Diastereoselective Hydroformylation of Methallylic Alcohols – Development of an Efficient Catalyst-Directing Group for Rhodium-Catalyzed Hydroformylation
作者:Bernhard Breit
DOI:10.1002/jlac.199719970907
日期:1997.9
The development of an efficientcatalyst-directinggroup based on ortho-diphenylphosphanyl benzoate (o-DPPB) for the substrate-directed, diastereoselectivehydroformylation of methallylicalcohols 5 is described. The hydroformylation of methallylic o-DPPB esters 9 provides the corresponding syn-aldehydes 10 with diastereoselectivities of up to 96:4. A specific steric demand of the substituent at the